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Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan

Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan Phase change material microcapsules were prepared by complex coacervation of silk fibroin (SF) and chitosan (CHI). n-Eicosane was used as the core material. The effects of SF/CHI ratio, and percentage of cross-linking agent and n-Eicosane content on the properties of microcapsules were studied. The size distribution and the surface morphology of microcapsules were characterized by optical and scanning electron microscopy. The encapsulation of core material was determined by energy dispersive spectrometer analysis. The results indicated that SF/CHI microcapsules were prepared successfully. Microcapsules had smooth outer surface when the ratio of SF to CHI was close to 5. On the other hand, at high SF/CHI ratios (≥14), microcapsules showed a two-layer structure, an inner compact layer, and an outer, more porous, sponge-like layer. The highest microencapsulation efficiency was obtained at a SF/CHI ratio of 20 in the presence of 0.9% cross-linking agent and of 1.5% n-Eicosane content. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Colloid Polymer Science Springer Journals

Preparation of PCM microcapsules by complex coacervation of silk fibroin and chitosan

Deveci, Senem; Basal, Guldemet
Colloid Polymer Science , Volume 287 (12) – Sep 23, 2009
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References (52)

Publisher
Springer Journals
Copyright
Copyright © 2009 by Springer-Verlag
Subject
Chemistry; Food Science ; Physical Chemistry ; Characterization and Evaluation of Materials; Soft and Granular Matter, Complex Fluids and Microfluidics; Polymer Sciences
ISSN
0303-402X
eISSN
1435-1536
DOI
10.1007/s00396-009-2115-z
Publisher site
See Article on Publisher Site

Abstract

Phase change material microcapsules were prepared by complex coacervation of silk fibroin (SF) and chitosan (CHI). n-Eicosane was used as the core material. The effects of SF/CHI ratio, and percentage of cross-linking agent and n-Eicosane content on the properties of microcapsules were studied. The size distribution and the surface morphology of microcapsules were characterized by optical and scanning electron microscopy. The encapsulation of core material was determined by energy dispersive spectrometer analysis. The results indicated that SF/CHI microcapsules were prepared successfully. Microcapsules had smooth outer surface when the ratio of SF to CHI was close to 5. On the other hand, at high SF/CHI ratios (≥14), microcapsules showed a two-layer structure, an inner compact layer, and an outer, more porous, sponge-like layer. The highest microencapsulation efficiency was obtained at a SF/CHI ratio of 20 in the presence of 0.9% cross-linking agent and of 1.5% n-Eicosane content.

Journal

Colloid Polymer Science – Springer Journals

Published: Sep 23, 2009

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